I had the same problem after upgrading my Dell Studio laptop from 11.10 to 12.04. The system would not wake after suspending. Instead I got a black screen and had to switch the machine off and on. Whilst trying to fix another upgrade issue (loss of wobbly windows) I downloaded and activated the Nvidia display driver and rebooted the machine. Then suspend and resume worked as expected (and wobbly windows!).
I don't know why the Nvidia driver was deactivated/lost during the upgrade. Another machine I use also upgraded from 11.10 to 12.04 without deactivating its Nvidia driver. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/990129 Title: Suspend/Resume hangs and fails - Ubuntu 12.04LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/990129/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
